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The 1954 Packard Panther Convertible was produced as a concept car with muscle. Packard also designed the Panther with then-revolutionary materials in mind. Packard -- which had considered using this then-revolutionary material as early as 1941, primarily as a means of continuing auto production in the face of wartime steel shortages -- was dabbling in the field, too. In 1953, the company again considered using the material and decided to build a two-seat convertible sports car with a GRP body. Packard's chief stylist, Richard A. Teague, was given the task of hastily styling the car. No time was allowed for him to construct a full-size mock-up, so management approved his design directly from a small one-sided model. A running version was completed in 1954, using the 127-inch wheelbase Cavalier chassis and the metal floorpan common to all Packards of that year. It was originally to be called "Grey Wolf II," after Packard's famed 1903 race car.

But upper management didn't like the name's connotation, so "Panther" was chosen instead. To lend its massive "sports car" some performance credentials, Packard gave the Panther a 359-cubic inch straight eight, the biggest engine available. The first two cars got McCulloch centrifugal superchargers, boosting the engine's output to 275 horsepower. Despite the car's rather generous dimensions, it actually performed well, at least in a straight line. With no major modifications other than a small racing windshield, Panther Number 2 went 131.1 mph at Daytona Beach, Florida, an unofficial class record. But ultimately, the Panther was overshadowed by Packard's many other woes, relegating the car to a sidebar in the last chapter of the venerable company's history. Only four Panthers were made, all of them essentially hand-built prototypes. Packard never seriously considered putting the car into production, despite heavy lobbying by one of its distributors. Today people's opinions of the Panther seem to be mixed. Packard enthusiasts will generally admit that the front end is not particularly elegant but consider the rest of the car sleek and interesting. Designer Richard Teague wasn't so kind. All four Panthers are believed to still exist. The silver example shown here is the first one. It is owned by the Mitchell Corporation of Owosso, which finished the bodies and interiors for the Panthers. The car, bearing added Mitchell nameplates, is currently housed in the company's private museum in Owosso, Michigan.

If you’re serious about weightlifting, you’ve probably heard the term "progressive overload" before. But what exactly is it? Progressive overload is the steady increase of stress placed on your muscles during exercise over time. You can achieve this through various methods, including increasing weight, reps, or sets. Mind you; this method is not for the faint of heart. As the name suggests, it demands more and more from your muscles. The line that sits between what is within the limit and beyond the limit is extended. Curious? Keep reading to find out more about it. What is Progressive Overload? Progressive overload is a fundamental principle in weightlifting that involves increasing the demands on your muscles over time. This means you need to lift heavier weights, Prime Boosts Official perform more reps, or do more sets to continue progressing. The concept of progressive overload is based on the idea that you need to challenge your body continually to see continued progress and improvements in strength and muscle growth.

When you lift weights, your muscles experience micro-tears, which heal and grow stronger during rest periods. Progressive overload ensures that your muscles are continually challenged, which means they will continue to grow and adapt to the increasing demands you place on them. By gradually increasing the demands on your muscles, you are forcing them to adapt. As a result, they will grow stronger. This is why simply doing the same workout repeatedly without any changes will lead to a plateau. Why is Progressive Overload Important? Progressive overload is essential for Prime Boosts Official building muscle and strength. Without it, your muscles will eventually adapt to your current workout routine, and you will stop seeing results. By gradually increasing the demands on your muscles, you can continue to progress and achieve your fitness goals. To effectively implement progressive overload, you need to track your progress and make changes to adjust to your workout routine regularly.